This project shows how to build a test exciter
providing 10W of RF from 80m to 2m. This device produces 2 individual tones (fully
programmable) which can be as close as zero. The difference of both frequencies
can be everything from zero to 160 MHz. It contains 2 individual synthesizers of
"Funk Amateur, Berlin" based on the legendary S570 and a combiner, low pass
filters and a power amplifier. This first step shows how a single amplifier is
used with no satisfying results regarding IM3. This project will be continued
with 2 amplifiers and more filters to avoid harmonics before and after
amplification.